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Doc's Diesel ATF+4 is a full PAO synthetic automatic transmission fluid built to meet or exceed the ATF+4 specification and also listed for DEXRON III and MERCON V applications. The synthetic base gives it strong oxidation resistance and resistance to deposit and sludge formation, which matters most in hot-running or heavily loaded transmissions. It suits owners of Chrysler, Dodge, Jeep and other ATF+4 vehicles who want a synthetic fluid and are willing to change on a shorter severe-duty schedule. Against conventional ATF+4 fluids it offers a more stable synthetic base; against OEM-branded fluid it competes on the same spec rather than a unique approval.
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Buyers rate it highly, with 4.7 out of 5 across 19 ratings. Owners who left feedback describe it as a solid synthetic ATF+4 fluid that shifts smoothly and holds up in heavier use.
Doc's Diesel ATF+4 is an automatic transmission fluid made from 100% PAO synthetic. It meets or exceeds OEM specifications for ATF+4, and the name also lists DEXRON III and MERCON V.
The fluid protects against deposits and sludge and provides increased oxidation resistance. It is made for transmission maintenance and is meant to keep the vehicle running over thousands of miles.
Change the fluid according to your vehicle manufacturer's warranty recommendations. Intervals are given for normal and severe duty.
